1.The train runs 【at】a speed of 70 miles an hour when it crosses the desert.【固定搭配】
2.It is not rare in 90s that people in their fifties 【were】 going to university for further education.【时态一致】
3.She can’t help 【clean】the house because she’s busy making a cake.【can't help doing是忍不住去做,与后面矛盾】
4.The girl is so shy that she never speaks until 【spoken】 to.【别人对她讲话】
5.Many of his articles are 【well】 thought of and people love to read them.【修饰动词用副词形式】
6.The pupils became quiet right away as their teacher 【raised】 his voice in anger.【rise是不及物动词】
7.In some parts of London,missing a bus means 【waiting】 for another hour.
8.He often thought of his childhood 【that】he spent with his grandma in that poor village.【作宾语要用关系代词而不是副词】
9.Mr Smith apologized 【for】the children to the lady for what they had done.替人家道歉
10.Is this the store 【which】sells clothes?【指代商店】